ABSTRACT
ObjectiveThe effect of inoculation with different organophosphate-resolving bacteria or compound bacteria on the quality of Paris polyphylla var. yunnanensis medicinal materials and rhizosphere soil fertility were studied to provide a reference for the development and application of biological bacterial fertilizer in artificial cultivation of P. polyphylla var. yunnanensis. MethodThe three dominant species of organophosphate-solubilizing bacteria were inoculated separately and in combination in sterilized soil by single-factor indoor pot planting, and no inoculation was used as the control group. The effect of inoculation of organophosphate-solubilizing bacteria on total saponins content in rhizomes of P. polyphylla var. yunnanensis, as well as microbial numbers, enzyme activities and nutrient contents in rhizosphere soil were analyzed. ResultIn the seven treatments inoculated with organophosphate-solubilizing bacteria, the total saponin content in the rhizomes of Paris polyphylla var. yunnanensis was increased by 16.42%, 3.83%, 16.86%, 33.69%, 2.11%, 13.44%, and 28.83%, respectively, compared with the control. Inoculation with organophosphate-solubilizing bacteria increased the number of soil microorganisms to varying degrees, and the effects of S6 and S7 treatments were the most significant. Inoculation with organophosphate-solubilizing bacteria improved the enzyme activity, and the effect of S7 treatment was the most significant. The activities of acid phosphatase, neutral phosphatase, alkaline phosphatase, protease, invertase and catalase were 49.96% and 104.67% , 110.17%, 99.61%, 26.26%, 11.29% higher than those of the control, respectively. Inoculation with organophosphate-solubilizing bacteria reduced the pH of the rhizosphere soil and increased the content of soil available nutrients. Under the S7 treatment, the contents of alkaline hydrolyzable nitrogen, available phosphorus and available potassium in the rhizosphere soil of P. polyphylla var. yunnanensis were 181.46%, 51.64% and 42.62% higher than those of the control, respectively. Correlation analysis showed that there was a significant positive correlation between total saponins and phosphatase activities, a significant positive correlation between soil microorganisms and soil enzyme activities, and a very significant positive correlation between soil nutrients. ConclusionInoculation of different organophosphate-resolving bacteria or compound bacteria can improve the quality and rhizosphere soil fertility of P. polyphylla var. yunnanensis. Among them, the mixed inoculation of three kinds of bacteria and the mixed inoculation of B. mycoides and B. wiedmannii have the best effect.
ABSTRACT
ObjectiveTo investigate the effects of the inoculation of potassium-solubilizing bacteria on the rhizosphere soil microenvironment of Paris polyphylla var. yunnanensis. MethodThe effects of different potassium-solubilizing bacteria on the physical and chemical properties, microbial community structure, and soil enzyme activity in the rhizosphere soil of P. polyphylla var. yunnanensis were investigated by pot planting at room temperature. The correlation of various indexes was analyzed. ResultThe inoculation with different potassium-solubilizing bacteria could significantly affect the physical and chemical properties of rhizosphere soil of P. polyphylla var. yunnanensis. The mass fractions of available nitrogen, available phosphorus, and available potassium were 24.5-90.5 mg·kg-1, 2.53-25.9 mg·kg-1, and 132-312 mg·kg-1, respectively, and the soil pH was 7.08-7.75, which were in line with the optimal ranges of P. polyphylla var. yunnanensis planting. The inoculation of different potassium-solubilizing bacteria could affect the number of bacteria, actinomycetes, and fungi in rhizosphere soil to varying degrees. The transformation of soil from "fungal type" to "bacterial type" marks the improvement of soil fertility. It also affected the enzyme activity of rhizosphere soil, and the activities of neutral phosphatase, protease, and polyphenol oxidase showed an increasing trend. The correlation analysis showed that the number of bacteria was negatively correlated with the number of fungi (r=-0.856, P<0.01), positively correlated with the number of actinomycetes, the content of available nitrogen and available potassium, and negatively correlated with soil pH. ConclusionThe inoculation of potassium-solubilizing bacteria can effectively improve the content of available potassium, available nitrogen, available phosphorus, and other nutrients in the rhizosphere soil of P. polyphylla var. yunnanensis, improve soil fertility, alleviate the continuous cropping obstacles of P. polyphylla var. yunnanensis, and lay a theoretical foundation for the green and sustainable development of P. polyphylla var. yunnanensis.
ABSTRACT
Objective To explore the effect of 5A intervention method on the success rates for quitting smoking and glucose metabolism level of patients with type 2 diabetes mellitus. Methods Thirty-two patients with type 2 diabetes mellitus from patients from January to June 2014 were divided into the control group, receiving traditional intervention, including asking, advising, assessing, assisting and arranging. The differences in the success rates for quitting smoking and glucose metabolism level between pre-and post-intervention was compared. Results The success rate for quitting smoking after intervention in the experment group higher than that in the control group. Statistical significance was found in glucose metabolism level before and after the intervention as well (P<0.05). Conclusion 5A intervention method can improve the success rate for quitting smoking and glucose metabolism level in type 2 diabetes mellitus patients.